Dulera (mometasone/formoterol) is a new medication available for the treatment of persistent asthma, and like Advair and Symbicort, combines an inhaled steroid and a long-acting beta-agonist. These 2 medications act together in order to better treat asthma than with using an inhaled steroid alone, but should only be used when asthma isn't controlled with the use of an inhaled steroid by itself, or by other asthma medications. Like Advair and Symbicort, Dulera has a black box warning due to the long-acting beta-agonist component. Is Dulera for you? Check with your doctor to see if your asthma is controlled with your current asthma medicines first.